Electromagnetic ore-separator.



PATENTED JAN. 31, 1905.

, E. LANGGUTH.

kLLBCTROMAGNPTIG 01m SEPARATOR.

No. 781,077.l

' APPLICATION IlIED FEB. 1, 1904. 1

2 SHEETS-SHEET l.

Q MEE:

' MWD-RN Ys y No.78L77; n PATENTBD1AN.31,1905

B.LANGGUTH.

ELEGTROMAGNETIG ORE SEPARATOR. APPLIOATION FILED rmx. 1., i904.

2 SHEETS-SHEET Z.

Nx/EIJ T c1 E. Langguth UNITEDA STATES Patenteduanuary 31, 1905.

PATENT Omron.

Enron LANGGUTH, or EUsxIRcHEN, GERMANY.

ELEcTRoMAGNETlo o'RE-SEPARATOR.

SPECIFICATION forming part f Letters Patent N0 781,077, dated January31, 1905.

Appiano nea February 1,1904. 'serial No. 191.539.

To @ZZ whom, it may concern,.-

` Be it known that I, Enron LANGGUTH, engineer, a subject of the Emperorof Germany,

residing at Koelnerstrasse 137, Euskirchen, Prussia, Germany,haveinvented a certain new and useful Improvement in ElectromagneticOre-Separators; and I. do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

My invention relates to apparatus for sepa- `time of increasing thedensity of the magnetic field employed.

Of the accompanying drawings, Figures l and 2 are a longitudinal and across section, respectively, of an armature constructed ac-V cording tomy present invention. Figs. 3 to 6 are longitudinal and cross sectionsof modiiications. Fig. 7 is a section showing the preferred shape anddisposition of the field-magnets in connection with the armature, andFigs. A

8 and 9 illustrate a modification.

In the drawings, a is the active armatureiron, preferably composed of anumber of disks placed face to face in the usual manner and insulatedfrom each other by paper or other suitable means. The single disks'arepunched at the edges, so as to form longitudinal grooves on the exteriorsurface of the armature, as is usual in the manufacture ofdynamo-machines. The surface thusproduced is, however,illsuited for thepurpose of separa` tion, partly because it is too rough and partlybecause the insulated wires constituting the armature-windings wouldsoon be destroyed by the mechanical action of the ore if it lwereallowed to pass over them. Previous inventors have tried to obviate thisdifficulty by protecting the exterior surface of the armature by meansofa cloth covering. This plan, however, has the great disadvantage thatthough a mechanical protection'may be obtained the field is at the sametime considerably weakened` 'because suficient space has to be providedbetween the field-magnets and the circumference of the armature to admitthe cloth. According to my invention I obtain the same or even a betterprotectionfor the armature-windings without weakening the field byproviding an iron covering enveloping the armature.Y In the drawingsthis covering or jacket is designated by the letter It may consist ofringshaped disks punched so as to admit of their being drawn over thearmature after the winding has been completed, as is shown in Figs. landQ, or else of iron wires c, Figs. 3 and t, wound onto the armature.Figs. and 6 show the iron covering @consisting of ring-shaped disks,applied to a ring armature d of the usual construction. tained ismounted between the usual fieldmagnets, preferably disposed in anoblique position, and made in a special shape for` the purposeV ofguiding the ore into the magnetic gap. Thus in Fig. 7, ct is thearmature, and c and fthe field-magnets. drawings, the pole-piecef is cutaway so as to present a convex` surface to the armature, thus forming agradually-narrowing gap for the admission of the vore and at the sametime concentrating the lines of force at one single line. The ore glidesdownward over a sloping surface and passes through the gap. The magneticmaterial is retained for a longer periodthan the non-magnetic or onlypartiallymagnetic material, and thus a separation takes place, as isusual in the art.

Figs. 8 and 9 show a modification of the arrangement. The armature d ismounted on a vertical shaft and rotated, as usual, between thepole-pieces S and N, and the ore-dust is admitted to the magnetic gap bymeans of a suitably-sized funnel placed above the armature.` It passesthrough the gap and is sepa'- rated by the attraction of the armature,by

The armature thus ob? As shown in the roo Which the magnetic parts arecarried round a longer part of the circumference than the non or lessmagnetic parts.

The use of the armature of a dynamo-machine as a separating magneticbody has the great advantage that no special arrangements are wanted fordriving it. The brushes are simply connected to a source of electricalcurrent, and the armature can thus be rotated at any speed desirablewith an exceedingly small expenditure of energy. At the same time mymagnetie'covering b forms an effectual protection of thearmature-windings against the deteriorating action of the ore andincreases rather than weakens the field in the magnetic gap.

Having now particularly described and ascertained the nature of my saidinvention and the manner in which the same is to be performed, I declarethat what I claim isl. In a magnetic separator, the combination withpole-pieces, of an armature rotating between said pole-pieces and havingwindings, a shield of magnetic material mounted directly on saidarmature and rotating therewith, means for feeding the material to beseparated to said armature, and means for collecting the separatedmaterial.

2. In a magnetic separator, the combination with pole-pieces, of anarmature rotating between said pole-pieces and having windings, a shieldrotating with said armature and consisting of annular members efmagnetic material mounted directly on said armature, means for feedingthe material to be separated to said armature, and means for collectingthe separated material.

3. In a magnetic separator, the combination with pole-pieces, of anarmature rotating between said pole-pieces and provided with windings,said parts being arranged to produce a gradually-narrowing gap, meansfor feeding the material to be separated to said gap, and means forcollecting the separated material.

4. In a magnetic separator, the combination with pole-pieces, of anarmature rotating between said pole-pieces and provided with windings,said parts arranged to produce a gradually-narrowing magnetic gap, acovering of magnetic material for said armature, means for feeding thematerial to be separated to said gap, and means for collecting theseparated material.

5. In a magnetic separator, the combination with an armature providedwith windings, of pole-pieces, one of said pole-pieces being conveXwhereby a gradually-narrowing magnetic gap is formed between saidpole-pieces and armature, means for feeding the material to be separatedto said gap, and means for collecting the separated material.

6. In a magnetic separator, the combination with an armature providedwith windings, of a covering of magnetic material for such armature,pole-pieces, one of said pole-pieces being convex, whereby agradually-narrowing magnetic gap is formed between said polepieces andarmature, means for feeding` the material to be separated to said gap,and means for collecting separated material.

7. In a magnetic separator, the combination with an armature providedwith windings, of a shield composed of annular members of magneticmaterial mounted directly on said armature, a pair of pole-piecesdisposed in an oblique position, one of said polc-pieees being convexwhereby a gradually-narrowing magnetic gap is formed, means for feedingthe material to be separated to said gap, and means for collecting theseparated material.

In testimony whereof I have hereunto set my hand and aiiixed my seal inthe presence of the two subscribing witnesses.

ERICH LANGGU'IH. ,[L. s] Vitn esses:

HANS BLOCK, VINZENZ PALM.

